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java.lang.NullPointerException: Can't pass null for argument 'pathString' in child()	at Source)	at com.test.finalapp.Activities.PreMainActivities.c.a(Unknown Source)	at Source)	at Source)	at Source)	at Source)	at android.os.Handler.handleCallback(	at android.os.Handler.dispatchMessage(	at android.os.Looper.loop(	at	at java.lang.reflect.Method.invoke(Native Method)	at$	at